Working with ScaleIO REST API using PowerShell - Part 2

In my previous post, I explained how to connect and authenticate with ScaleIO REST API, and use Invoke-RestMethod. In this article, I will explain how to query selected statistics/ properties with POST method. 

First, you have to define the set of properties that you would like to query, and then pass it to "invoke-restmethod". You can get the list of available properties of the respective object from the ScaleIO REST API Reference Guide. 

Example 1: Query and collect MDM cluster information
Here I am collecting the below-mentioned properties of "MDMCluster" object. 

#selected properties to query

$param1 = @'

{

    "properties":["name", "clusterMode", "master", "clusterState", "virtualIps"]

}

'@

#invoke-restmethod with respective uri

$MDM_cluster_stats = (Invoke-RestMethod -Uri "https://192.168.11.15:443/api/instances/System/queryMdmCluster " -Body $param1 -ContentType "application/json" -Headers $ScaleIOAuthHeaders -Method Post)

#organize output in a hash table

$mdm_props = @{

    'Cluster name'      = ($MDM_cluster_stats).name

    'Mode'              = ($MDM_cluster_stats).clusterMode

    'Cluster state'     = ($MDM_cluster_stats).clusterState

    'Master MDM IP'     = ($MDM_cluster_stats.master).managementIPs[0]

    'Cluster VIP01'     = ($MDM_cluster_stats).virtualIps[0]

    'Cluster VIP02'     = ($MDM_cluster_stats).virtualIps[1]

}

Write-Output $mdm_props

#sample output screenshot given below

Example 2: Query and collect overall ScaleIO system capacity details

Here I am collecting some properties of "System Statistics" object. 

#selected properties to query

$param2 = @'

{

    "properties":["maxCapacityInKb", "capacityInUseInKb", "spareCapacityInKb", "failedCapacityInKb", "degradedFailedCapacityInKb"]

}

'@

#invoke-restmethod with respective uri

$system_overall_stats = (Invoke-RestMethod -uri "https://192.168.11.15:443/api/types/System/instances/action/querySelectedStatistics " -Body $param2 -ContentType "application/json" -Headers $ScaleIOAuthHeaders -Method Post)

#organize output in a hash table

$system_capacity_props = @{

    "System max capacity (TB)"                = (($system_overall_stats.maxCapacityInKb)/1024/1024/1024)

    "System capacity in use (TB)"             = (($system_overall_stats.capacityInUseInKb)/1024/1024/1024)

    "System spare capacity (TB)"              = (($system_overall_stats.spareCapacityInKb)/1024/1024/1024)

    "System failed capacity (TB)"             = (($system_overall_stats.failedCapacityInKb)/1024/1024/1024)

    "System degraded failed capacity (TB)"    = (($system_overall_stats.degradedFailedCapacityInKb)/1024/1024/1024)

}

Write-Output $system_capacity_props

#sample output screenshot given below

Hope this was useful. Please refer Dell EMC ScaleIO Ready Node Version 2.5 API Reference Guide for more details.